<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../vue-2.7.10/vue.js"></script>
</head>
<body>
    <div id="app">
        <p>电脑的价格：{{price|addPriceIcon}}</p>
    </div>
    
</body>
<script>
    new Vue({
        el:"#app",
        data:{
            price:200,
        },
        fliters:{
            addPriceIcon(val){
                return '￥'+val;
            }
        }
    })
</script>
</html>